[INFO] fetching crate c2g 0.7.4...
[INFO] checking c2g-0.7.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate c2g 0.7.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate c2g 0.7.4 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate c2g 0.7.4
[INFO] finished tweaking crates.io crate c2g 0.7.4
[INFO] tweaked toml for crates.io crate c2g 0.7.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate c2g 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 187fcb0711c17912b723161415f6a5e6f72f173c9e2556d89593535b8229a055
[INFO] running `Command { std: "docker" "start" "-a" "187fcb0711c17912b723161415f6a5e6f72f173c9e2556d89593535b8229a055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "187fcb0711c17912b723161415f6a5e6f72f173c9e2556d89593535b8229a055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "187fcb0711c17912b723161415f6a5e6f72f173c9e2556d89593535b8229a055", kill_on_drop: false }`
[INFO] [stdout] 187fcb0711c17912b723161415f6a5e6f72f173c9e2556d89593535b8229a055
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab1d714ae00109fde7b561b9b7ef68a8665b09b0b172eb010d4fc33bc4408416
[INFO] running `Command { std: "docker" "start" "-a" "ab1d714ae00109fde7b561b9b7ef68a8665b09b0b172eb010d4fc33bc4408416", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking bytemuck v1.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking roxmltree v0.14.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ttf-parser v0.15.0
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking fontconfig-parser v0.5.0
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking memmap2 v0.5.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking unicode-ccc v0.1.2
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking siphasher v0.3.10
[INFO] [stderr]    Compiling shakmaty v0.21.0
[INFO] [stderr]     Checking unicode-bidi-mirroring v0.1.0
[INFO] [stderr]     Checking unicode-script v0.5.2
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking svgtypes v0.8.0
[INFO] [stderr]     Checking kurbo v0.8.1
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking simplecss v0.2.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking safe_arch v0.5.2
[INFO] [stderr]     Checking rgb v0.8.27
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking rustybuzz v0.5.0
[INFO] [stderr]     Checking fontdb v0.9.1
[INFO] [stderr]     Checking pico-args v0.4.2
[INFO] [stderr]     Checking rctree v0.4.0
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]     Checking tiny-skia v0.6.3
[INFO] [stderr]     Checking svgfilters v0.4.0
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking pgn-reader v0.20.0
[INFO] [stderr]     Checking usvg v0.22.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling include_dir_impl v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]     Checking include_dir v0.6.0
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking resvg v0.22.0
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking c2g v0.7.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/board.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use shakmaty::{self, Board, File, Move, Rank, Role, Square};
[INFO] [stdout]   |                ^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tiny_skia` is imported redundantly
[INFO] [stdout]  --> src/drawer/board.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tiny_skia::{self, Pixmap, PixmapPaint, Transform};
[INFO] [stdout]   |                 ^^^^ the item `tiny_skia` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usvg` is imported redundantly
[INFO] [stdout]  --> src/drawer/error.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use usvg;
[INFO] [stdout]   |     ^^^^ the item `usvg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/svgs.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use shakmaty::{self, Role};
[INFO] [stdout]   |                ^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usvg` is imported redundantly
[INFO] [stdout]  --> src/drawer/svgs.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use usvg::{self, fontdb, Options, Tree};
[INFO] [stdout]   |            ^^^^ the item `usvg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/termination.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use shakmaty;
[INFO] [stdout]   |     ^^^^^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tiny_skia` is imported redundantly
[INFO] [stdout]  --> src/drawer/termination.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tiny_skia::{self, Pixmap, Transform};
[INFO] [stdout]   |                 ^^^^ the item `tiny_skia` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/utils.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use shakmaty::{self, File, Rank, Role, Square};
[INFO] [stdout]   |                ^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gif` is imported redundantly
[INFO] [stdout]  --> src/giffer.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use gif::{self, Encoder, Frame, Repeat};
[INFO] [stdout]   |           ^^^^ the item `gif` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/board.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use shakmaty::{self, Board, File, Move, Rank, Role, Square};
[INFO] [stdout]   |                ^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usvg` is imported redundantly
[INFO] [stdout]  --> src/drawer/error.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use usvg;
[INFO] [stdout]   |     ^^^^ the item `usvg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `shakmaty` is imported redundantly
[INFO] [stdout]  --> src/drawer/svgs.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use shakmaty::{self, Role};
[INFO] [stdout]   |                ^^^^ the item `shakmaty` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `usvg` is imported redundantly
[INFO] [stdout]  --> src/drawer/svgs.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use usvg::{self, fontdb, Options, Tree};
[INFO] [stdout]   |            ^^^^ the item `usvg` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tiny_skia` is imported redundantly
[INFO] [stdout]  --> src/drawer/termination.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tiny_skia::{self, Pixmap, Transform};
[INFO] [stdout]   |                 ^^^^ the item `tiny_skia` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SVGForest` is imported redundantly
[INFO] [stdout]    --> src/drawer/termination.rs:195:40
[INFO] [stdout]     |
[INFO] [stdout] 194 |     use super::*;
[INFO] [stdout]     |         -------- the item `SVGForest` is already imported here
[INFO] [stdout] 195 |     use crate::drawer::{SVGFontConfig, SVGForest};
[INFO] [stdout]     |                                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gif` is imported redundantly
[INFO] [stdout]  --> src/giffer.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use gif::{self, Encoder, Frame, Repeat};
[INFO] [stdout]   |           ^^^^ the item `gif` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.19s
[INFO] running `Command { std: "docker" "inspect" "ab1d714ae00109fde7b561b9b7ef68a8665b09b0b172eb010d4fc33bc4408416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab1d714ae00109fde7b561b9b7ef68a8665b09b0b172eb010d4fc33bc4408416", kill_on_drop: false }`
[INFO] [stdout] ab1d714ae00109fde7b561b9b7ef68a8665b09b0b172eb010d4fc33bc4408416